Kurzfassung

Significant reduction of mono- and bistatic radar cross sections of an electrically large metallic cube through the application of a low reflection electrically thin metamaterial coating in Ka-band (30 - 40 GHz) is described. The reduction is estimated by comparing the scattering patterns of the coated and uncoated cube. A coating composed of a metallic array of capacitively loaded strips implanted in a thin slightly lossy dielectric layer has been designed and fabricated to permit experimental verification of the performance of the coating. The measurement results are compared with full wave and physical theory of diffraction simulations, and the possibility of accurately modeling the low reflection coatings with impedance boundary conditions is pointed out.